Recommendations / Tips
I flew into London Luton. If I had a choice, since I had to get from the center of London to Luton, then from luton to Charles de Gaulle airport, then from Charles de Gaulle to the center of paris, I would've just taken the train. For my case, even though easyjet was pleasant, you can take as much luggage as you want on a train and it takes you from the center of Paris to the Center of London. That would've definitely been a plus.